Top Definition
N. Fifty-five miles per hour, origins in CB radio slang.
Speed limit comin' up is double nickel, my cornflake friend.
by Digs July 13, 2004
The amount of points Michael Jordan dropped on the Knicks the year he came back!
MJ just came back and dropped a double nickel of those sad Knicks!
by crooks October 17, 2005
n. Interstate Highway 55 (I-55) as it is called in some parts of the southern United States.
The double nickel follows a route from Chicago to New Orleans.
by Richard Black October 17, 2005
Senior citizen (over 55).
David's almost a double nickel -- he's been getting junk mail from those AARP political hacks for years!
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